Vulnerability-Lookup

BDU:2026-01306 (CVE-2025-40244)

Vulnerability from fstec – Published: 2026-02-06 – Updated: 2026-03-11 – View on bdu.fstec.ru Fixed

Title

Уязвимость функций hfs_find_init() и hfs_brec_find() модуля fs/hfsplus/bfind.c поддержки расширенной файловой системы Apple HFS ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функций hfs_find_init() и hfs_brec_find() модуля fs/hfsplus/bfind.c поддержки расширенной файловой системы Apple HFS ядра операционной системы Linux связана с использованием неинициализированной переменной. Эксплуатация уязвимости может позволить нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

6.0 (Medium) CVSS 2.0


                      
                        AV:L/AC:H/Au:S/C:C/I:C/A:C

7.0 (High) CVSS 3.1


                      
                        CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-457 - Использование неинициализированной переменной

Aliases

CVE-2025-40244

References

21 references

URL
https://www.cve.org/CVERecord?id=CVE-2025-40244
https://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71
https://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a
https://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598
https://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf
https://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c
https://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec
https://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899
https://git.kernel.org/linus/4840ceadef4290c56cc422f0fc697655f3cbf070
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.301
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.246
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.196
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.158
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.115
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.56
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.17.6
https://lore.kernel.org/linux-cve-announce/2025120404-CVE-2025-40244-941b@gregkh/
https://security-tracker.debian.org/tracker/CVE-2025-40244
https://altsp.su/obnovleniya-bezopasnosti/
https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18
https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38

Impacted products

4 products from 3 vendors

Vendors

Сообщество свободного программного обеспечения, АО «ИВК», ООО «РусБИТех-Астра»

Products

Debian GNU/Linux, Альт 8 СП (запись в едином реестре российских программ №4305), Astra Linux Special Edition (запись в едином реестре российских программ №369), Linux

Versions

11 (Debian GNU/Linux), 12 (Debian GNU/Linux), - (Альт 8 СП), 1.8 (Astra Linux Special Edition), 13 (Debian GNU/Linux), от 5.16 до 6.1.157 включительно (Linux), от 6.13 до 6.17.5 включительно (Linux), от 5.5 до 5.10.245 включительно (Linux), от 2.6.12 до 5.4.300 включительно (Linux), от 5.11 до 5.15.195 включительно (Linux), от 6.2 до 6.6.114 включительно (Linux), от 6.7 до 6.12.55 включительно (Linux), 3.8 (Astra Linux Special Edition)

Product types

Operating system

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, АО «ИВК» Альт 8 СП - (запись в едином реестре российских программ №4305), ООО «РусБИТех-Астра» Astra Linux Special Edition 1.8 (запись в едином реестре российских программ №369), Сообщество свободного программного обеспечения Debian GNU/Linux 13, Сообщество свободного программного обеспечения Linux от 5.16 до 6.1.157 включительно, Сообщество свободного программного обеспечения Linux от 6.13 до 6.17.5 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.245 включительно, Сообщество свободного программного обеспечения Linux от 2.6.12 до 5.4.300 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.195 включительно, Сообщество свободного программного обеспечения Linux от 6.2 до 6.6.114 включительно, Сообщество свободного программного обеспечения Linux от 6.7 до 6.12.55 включительно, ООО «РусБИТех-Астра» Astra Linux Special Edition 3.8 (запись в едином реестре российских программ №369)

Mitigations

В условиях отсутствия обновлений безопасности от производителя рекомендуется придерживаться "Рекомендаций по безопасной настройке операционных систем LINUX", изложенных в методическом документе ФСТЭК России, утверждённом 25 декабря 2022 года. Использование рекомендаций: Для Linux: https://lore.kernel.org/linux-cve-announce/2025120404-CVE-2025-40244-941b@gregkh/ https://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71 https://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a https://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598 https://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf https://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c https://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec https://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899 https://git.kernel.org/linus/4840ceadef4290c56cc422f0fc697655f3cbf070 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.301 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.246 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.196 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.158 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.115 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.56 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.17.6 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2025-40244 Для ОС Альт 8 СП: установка обновления из публичного репозитория программного средства: https://altsp.su/obnovleniya-bezopasnosti/ Для ОС Astra Linux: - обновить пакет linux-6.1 до 6.1.158-1.astra1+ci8 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 - обновить пакет linux-6.12 до 6.12.60-1.astra1+ci20 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 Для ОС Astra Linux: обновить пакет linux-6.1 до 6.1.158-1.astra1+ci8 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:H/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb, \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "11 (Debian GNU/Linux), 12 (Debian GNU/Linux), - (\u0410\u043b\u044c\u0442 8 \u0421\u041f), 1.8 (Astra Linux Special Edition), 13 (Debian GNU/Linux), \u043e\u0442 5.16 \u0434\u043e 6.1.157 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.13 \u0434\u043e 6.17.5 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.245 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 2.6.12 \u0434\u043e 5.4.300 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.195 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.2 \u0434\u043e 6.6.114 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.7 \u0434\u043e 6.12.55 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), 3.8 (Astra Linux Special Edition)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\n\u0414\u043b\u044f Linux:\nhttps://lore.kernel.org/linux-cve-announce/2025120404-CVE-2025-40244-941b@gregkh/\nhttps://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71\nhttps://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a\nhttps://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598\nhttps://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf\nhttps://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c\nhttps://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec\nhttps://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899\nhttps://git.kernel.org/linus/4840ceadef4290c56cc422f0fc697655f3cbf070\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.301\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.246\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.196\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.158\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.115\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.56\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.17.6\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2025-40244\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u043b\u044c\u0442 8 \u0421\u041f: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u0433\u043e \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430: https://altsp.su/obnovleniya-bezopasnosti/\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.158-1.astra1+ci8 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.12 \u0434\u043e 6.12.60-1.astra1+ci20 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n\u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.158-1.astra1+ci8 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "31.08.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "11.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "06.02.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-01306",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2025-40244",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Debian GNU/Linux, \u0410\u043b\u044c\u0442 8 \u0421\u041f (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305), Astra Linux Special Edition (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Linux",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u043b\u044c\u0442 8 \u0421\u041f -  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305), \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.8  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 13 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.16 \u0434\u043e 6.1.157 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.13 \u0434\u043e 6.17.5 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.5 \u0434\u043e 5.10.245 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 2.6.12 \u0434\u043e 5.4.300 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.11 \u0434\u043e 5.15.195 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.2 \u0434\u043e 6.6.114 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.7 \u0434\u043e 6.12.55 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 3.8  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0439 hfs_find_init() \u0438 hfs_brec_find() \u043c\u043e\u0434\u0443\u043b\u044f fs/hfsplus/bfind.c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u043e\u0439 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Apple HFS \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 (CWE-457)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0439 hfs_find_init() \u0438 hfs_brec_find() \u043c\u043e\u0434\u0443\u043b\u044f fs/hfsplus/bfind.c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u043e\u0439 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Apple HFS \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.cve.org/CVERecord?id=CVE-2025-40244\nhttps://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71\nhttps://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a\nhttps://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598\nhttps://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf\nhttps://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c\nhttps://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec\nhttps://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899\nhttps://git.kernel.org/linus/4840ceadef4290c56cc422f0fc697655f3cbf070\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.301\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.246\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.196\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.158\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.115\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.56\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.17.6\nhttps://lore.kernel.org/linux-cve-announce/2025120404-CVE-2025-40244-941b@gregkh/\nhttps://security-tracker.debian.org/tracker/CVE-2025-40244\nhttps://altsp.su/obnovleniya-bezopasnosti/\nhttps://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18\nhttps://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-457",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7)"
}

CVE-2025-40244 (GCVE-0-2025-40244)

Vulnerability from cvelistv5 – Published: 2025-12-04 15:31 – Updated: 2026-08-05 12:08

Title

hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()

Summary

In the Linux kernel, the following vulnerability has been resolved: hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent() The syzbot reported issue in __hfsplus_ext_cache_extent(): [ 70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.195022][ T9350] __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.195530][ T9350] hfsplus_file_extend+0x74f/0x1cf0 [ 70.195998][ T9350] hfsplus_get_block+0xe16/0x17b0 [ 70.196458][ T9350] __block_write_begin_int+0x962/0x2ce0 [ 70.196959][ T9350] cont_write_begin+0x1000/0x1950 [ 70.197416][ T9350] hfsplus_write_begin+0x85/0x130 [ 70.197873][ T9350] generic_perform_write+0x3e8/0x1060 [ 70.198374][ T9350] __generic_file_write_iter+0x215/0x460 [ 70.198892][ T9350] generic_file_write_iter+0x109/0x5e0 [ 70.199393][ T9350] vfs_write+0xb0f/0x14e0 [ 70.199771][ T9350] ksys_write+0x23e/0x490 [ 70.200149][ T9350] __x64_sys_write+0x97/0xf0 [ 70.200570][ T9350] x64_sys_call+0x3015/0x3cf0 [ 70.201065][ T9350] do_syscall_64+0xd9/0x1d0 [ 70.201506][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.202054][ T9350] [ 70.202279][ T9350] Uninit was created at: [ 70.202693][ T9350] __kmalloc_noprof+0x621/0xf80 [ 70.203149][ T9350] hfsplus_find_init+0x8d/0x1d0 [ 70.203602][ T9350] hfsplus_file_extend+0x6ca/0x1cf0 [ 70.204087][ T9350] hfsplus_get_block+0xe16/0x17b0 [ 70.204561][ T9350] __block_write_begin_int+0x962/0x2ce0 [ 70.205074][ T9350] cont_write_begin+0x1000/0x1950 [ 70.205547][ T9350] hfsplus_write_begin+0x85/0x130 [ 70.206017][ T9350] generic_perform_write+0x3e8/0x1060 [ 70.206519][ T9350] __generic_file_write_iter+0x215/0x460 [ 70.207042][ T9350] generic_file_write_iter+0x109/0x5e0 [ 70.207552][ T9350] vfs_write+0xb0f/0x14e0 [ 70.207961][ T9350] ksys_write+0x23e/0x490 [ 70.208375][ T9350] __x64_sys_write+0x97/0xf0 [ 70.208810][ T9350] x64_sys_call+0x3015/0x3cf0 [ 70.209255][ T9350] do_syscall_64+0xd9/0x1d0 [ 70.209680][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.210230][ T9350] [ 70.210454][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Not tainted 6.12.0-rc5 #5 [ 70.211174][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 70.212115][ T9350] ===================================================== [ 70.212734][ T9350] Disabling lock debugging due to kernel taint [ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic set ... [ 70.213858][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Tainted: G B 6.12.0-rc5 #5 [ 70.214679][ T9350] Tainted: [B]=BAD_PAGE [ 70.215057][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 70.215999][ T9350] Call Trace: [ 70.216309][ T9350] <TASK> [ 70.216585][ T9350] dump_stack_lvl+0x1fd/0x2b0 [ 70.217025][ T9350] dump_stack+0x1e/0x30 [ 70.217421][ T9350] panic+0x502/0xca0 [ 70.217803][ T9350] ? kmsan_get_metadata+0x13e/0x1c0 [ 70.218294][ Message fromT sy9350] kmsan_report+0x296/slogd@syzkaller 0x2aat Aug 18 22:11:058 ... kernel :[ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic [ 70.220179][ T9350] ? kmsan_get_metadata+0x13e/0x1c0 set ... [ 70.221254][ T9350] ? __msan_warning+0x96/0x120 [ 70.222066][ T9350] ? __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.223023][ T9350] ? hfsplus_file_extend+0x74f/0x1cf0 [ 70.224120][ T9350] ? hfsplus_get_block+0xe16/0x17b0 [ 70.224946][ T9350] ? __block_write_begin_int+0x962/0x2ce0 [ 70.225756][ T9350] ? cont_write_begin+0x1000/0x1950 [ 70.226337][ T9350] ? hfsplus_write_begin+0x85/0x130 [ 70.226852][ T9350] ? generic_perform_write+0x3e8/0x1060 [ 70.227405][ T9350] ? __generic_file_write_iter+0x215/0x460 [ 70.227979][ T9350] ? generic_file_write_iter+0x109/0x5e0 [ 70.228540][ T9350] ? vfs_write+0xb0f/0x14e0 [ 70.228997][ T9350] ? ksys_write+0x23e/0x490 ---truncated---

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c1ec90bed504640a4…
https://git.kernel.org/stable/c/b8a72692aa42b7dcd…
https://git.kernel.org/stable/c/c135b8dca65526aa5…
https://git.kernel.org/stable/c/d7e313039a8f3a6ee…
https://git.kernel.org/stable/c/a5bfb13b4f406aef1…
https://git.kernel.org/stable/c/99202d94909d323a3…
https://git.kernel.org/stable/c/14c673a2f3ecf650b…
https://git.kernel.org/stable/c/4840ceadef4290c56…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c1ec90bed504640a42bb20a5f413be39cd17ad71 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b8a72692aa42b7dcd179a96b90bc2763ac74576a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c135b8dca65526aa5b8814e9954e0ae317d9c598 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d7e313039a8f3a6ee072dc5ff4643234d2d735cf (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a5bfb13b4f406aef1a450f99d22d3e48df01528c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 99202d94909d323a30d154ab0261c0a07166daec (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 14c673a2f3ecf650b694a52a88688f1d71849899 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4840ceadef4290c56cc422f0fc697655f3cbf070 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.4.301 , ≤ 5.4.* (semver) Unaffected: 5.10.246 , ≤ 5.10.* (semver) Unaffected: 5.15.196 , ≤ 5.15.* (semver) Unaffected: 6.1.158 , ≤ 6.1.* (semver) Unaffected: 6.6.115 , ≤ 6.6.* (semver) Unaffected: 6.12.56 , ≤ 6.12.* (semver) Unaffected: 6.17.6 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/hfsplus/bfind.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c1ec90bed504640a42bb20a5f413be39cd17ad71",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "b8a72692aa42b7dcd179a96b90bc2763ac74576a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "c135b8dca65526aa5b8814e9954e0ae317d9c598",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "d7e313039a8f3a6ee072dc5ff4643234d2d735cf",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a5bfb13b4f406aef1a450f99d22d3e48df01528c",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "99202d94909d323a30d154ab0261c0a07166daec",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "14c673a2f3ecf650b694a52a88688f1d71849899",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "4840ceadef4290c56cc422f0fc697655f3cbf070",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/hfsplus/bfind.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.196",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.115",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.301",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.246",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.196",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.158",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.115",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.56",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.6",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()\n\nThe syzbot reported issue in __hfsplus_ext_cache_extent():\n\n[   70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990\n[   70.195022][ T9350]  __hfsplus_ext_cache_extent+0x7d0/0x990\n[   70.195530][ T9350]  hfsplus_file_extend+0x74f/0x1cf0\n[   70.195998][ T9350]  hfsplus_get_block+0xe16/0x17b0\n[   70.196458][ T9350]  __block_write_begin_int+0x962/0x2ce0\n[   70.196959][ T9350]  cont_write_begin+0x1000/0x1950\n[   70.197416][ T9350]  hfsplus_write_begin+0x85/0x130\n[   70.197873][ T9350]  generic_perform_write+0x3e8/0x1060\n[   70.198374][ T9350]  __generic_file_write_iter+0x215/0x460\n[   70.198892][ T9350]  generic_file_write_iter+0x109/0x5e0\n[   70.199393][ T9350]  vfs_write+0xb0f/0x14e0\n[   70.199771][ T9350]  ksys_write+0x23e/0x490\n[   70.200149][ T9350]  __x64_sys_write+0x97/0xf0\n[   70.200570][ T9350]  x64_sys_call+0x3015/0x3cf0\n[   70.201065][ T9350]  do_syscall_64+0xd9/0x1d0\n[   70.201506][ T9350]  entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[   70.202054][ T9350]\n[   70.202279][ T9350] Uninit was created at:\n[   70.202693][ T9350]  __kmalloc_noprof+0x621/0xf80\n[   70.203149][ T9350]  hfsplus_find_init+0x8d/0x1d0\n[   70.203602][ T9350]  hfsplus_file_extend+0x6ca/0x1cf0\n[   70.204087][ T9350]  hfsplus_get_block+0xe16/0x17b0\n[   70.204561][ T9350]  __block_write_begin_int+0x962/0x2ce0\n[   70.205074][ T9350]  cont_write_begin+0x1000/0x1950\n[   70.205547][ T9350]  hfsplus_write_begin+0x85/0x130\n[   70.206017][ T9350]  generic_perform_write+0x3e8/0x1060\n[   70.206519][ T9350]  __generic_file_write_iter+0x215/0x460\n[   70.207042][ T9350]  generic_file_write_iter+0x109/0x5e0\n[   70.207552][ T9350]  vfs_write+0xb0f/0x14e0\n[   70.207961][ T9350]  ksys_write+0x23e/0x490\n[   70.208375][ T9350]  __x64_sys_write+0x97/0xf0\n[   70.208810][ T9350]  x64_sys_call+0x3015/0x3cf0\n[   70.209255][ T9350]  do_syscall_64+0xd9/0x1d0\n[   70.209680][ T9350]  entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[   70.210230][ T9350]\n[   70.210454][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Not tainted 6.12.0-rc5 #5\n[   70.211174][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[   70.212115][ T9350] =====================================================\n[   70.212734][ T9350] Disabling lock debugging due to kernel taint\n[   70.213284][ T9350] Kernel panic - not syncing: kmsan.panic set ...\n[   70.213858][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Tainted: G    B              6.12.0-rc5 #5\n[   70.214679][ T9350] Tainted: [B]=BAD_PAGE\n[   70.215057][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[   70.215999][ T9350] Call Trace:\n[   70.216309][ T9350]  \u003cTASK\u003e\n[   70.216585][ T9350]  dump_stack_lvl+0x1fd/0x2b0\n[   70.217025][ T9350]  dump_stack+0x1e/0x30\n[   70.217421][ T9350]  panic+0x502/0xca0\n[   70.217803][ T9350]  ? kmsan_get_metadata+0x13e/0x1c0\n\n[   70.218294][ Message fromT sy9350]  kmsan_report+0x296/slogd@syzkaller 0x2aat Aug 18 22:11:058 ...\n kernel\n:[   70.213284][ T9350] Kernel panic - not syncing: kmsan.panic [   70.220179][ T9350]  ? kmsan_get_metadata+0x13e/0x1c0\nset ...\n[   70.221254][ T9350]  ? __msan_warning+0x96/0x120\n[   70.222066][ T9350]  ? __hfsplus_ext_cache_extent+0x7d0/0x990\n[   70.223023][ T9350]  ? hfsplus_file_extend+0x74f/0x1cf0\n[   70.224120][ T9350]  ? hfsplus_get_block+0xe16/0x17b0\n[   70.224946][ T9350]  ? __block_write_begin_int+0x962/0x2ce0\n[   70.225756][ T9350]  ? cont_write_begin+0x1000/0x1950\n[   70.226337][ T9350]  ? hfsplus_write_begin+0x85/0x130\n[   70.226852][ T9350]  ? generic_perform_write+0x3e8/0x1060\n[   70.227405][ T9350]  ? __generic_file_write_iter+0x215/0x460\n[   70.227979][ T9350]  ? generic_file_write_iter+0x109/0x5e0\n[   70.228540][ T9350]  ? vfs_write+0xb0f/0x14e0\n[   70.228997][ T9350]  ? ksys_write+0x23e/0x490\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The defect is only reachable by mounting an attacker-authored HFS+ block device or image locally and then issuing ordinary file syscalls (read/write/unlink) against it; there is no network, adjacent-network, or remote-peer data path into hfsplus_get_block() or hfs_brec_find(). Local mounting of attacker-supplied images is routinely available via udisks2/automount, loop devices, and fstab `user` entries.\nAC:L - Every precondition comes from attacker-authored on-disk metadata: setting vhdr-\u003enext_cnid to 0 deterministically yields inode-\u003ei_ino == 0 so the cnid comparison matches, and an extents b-tree header with root == 0 (or an index node with a zero record offset) deterministically forces the uninitialized-field return path; the residual uninitialized slab/stack values are groomable from userspace with standard techniques and the syzbot reproducer triggers the bug reliably with no race or uncontrollable condition.\nPR:L - hfsplus is registered FS_REQUIRES_DEV without FS_USERNS_MOUNT, so the mount itself needs CAP_SYS_ADMIN in the initial namespace and is not obtainable via unshare -Ur; however, once a privileged automounter such as udisks2 has mounted the removable volume, an ordinary unprivileged local user drives the entire hfsplus_get_block \u2192 hfsplus_file_extend \u2192 __hfsplus_ext_read_extent path with a plain write(), with no capability check anywhere along it.\nUI:N - In the removable-media/udisks2 automount scenario the crafted volume is mounted without any deliberate victim action, and the trigger itself is a normal file read or write performed by the attacker on their own image.\nS:U - The uninitialized-memory consumption, the resulting out-of-bounds page accesses, and any fault all occur inside the host kernel\u0027s own security authority; no VM, hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The uninitialized fd-\u003erecord and fd-\u003eentryoffset gate and then feed hfs_bnode_read(bnode, \u0026data, off, 4) in the hfs_brec_find() index-node loop, where the unvalidated offset indexes node-\u003epage[] out of bounds and dereferences arbitrary slab contents as a struct page *, giving an unbounded kernel-memory read; in addition, stale kmalloc\u0027d bytes from fd-\u003ekey seed hip-\u003ecached_start/cached_extents, which are persisted into on-disk metadata the attacker reads back.\nI:H - On the hfsplus_free_fork() path, __hfsplus_ext_read_extent() can return success with uninitialized fields, after which hfs_brec_remove() performs hfs_bnode_write_u16() and hfs_bnode_move() using the garbage fd-\u003erecord, fd-\u003ekeyoffset and fd-\u003ekeylength+fd-\u003eentrylength, producing out-of-bounds writes into kernel page data; garbage extent records additionally steer map_bh() to arbitrary device sectors.\nA:H - On the tree-\u003eroot == 0 path fd-\u003ebnode is NULL, so once the uninitialized entrylength passes the \"!= sizeof(hfsplus_extent_rec)\" check the code dereferences a NULL bnode in hfs_bnode_read(); the reported syzbot outcome is already \"Kernel panic - not syncing\", and a persistent crafted volume retriggers the fault on every access."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:08:48.412Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a"
        },
        {
          "url": "https://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c"
        },
        {
          "url": "https://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec"
        },
        {
          "url": "https://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899"
        },
        {
          "url": "https://git.kernel.org/stable/c/4840ceadef4290c56cc422f0fc697655f3cbf070"
        }
      ],
      "title": "hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40244",
    "datePublished": "2025-12-04T15:31:33.249Z",
    "dateReserved": "2025-04-16T07:20:57.181Z",
    "dateUpdated": "2026-08-05T12:08:48.412Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.